In a paper published in Environmental Microbiology, Dr. Anna Gorbushina (Carl-von-Ossietzky University, Oldenburg, Germany), Professor William Broughton (University of Geneva, Switzerand) and their colleagues analysed dust samples collected by Charles Darwin and others almost 200 years ago. Geo-chemical analyses showed that these samples contained wind-fractionated dust from West Africa and some travelled as far as the Caribbean. Their results clearly show that diverse microbes, including ascomycetes, and eubacteria can live for centuries and survive intercontinental travel.
“These findings push forward our understanding of planetary microbial ecology.” said Professor Broughton.
But could inter-continental spread of microbial hitch-hikers lead to the spread of contaminants or disease? “Obviously, intercontinental spread of micro-organisms has been with us for a very long time, so unless land-use patterns in the Western Sahara have changed recently, disasters like the demise of coral in the Caribbean, cannot be ascribed to the intercontinental travel of desert bugs” said Professor Broughton.
Davina Quarterman | alfa
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